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Implement native and WASM WebSocket client for sigsocket communication

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- Added `NativeClient` for non-WASM environments with automatic reconnection and message handling.
- Introduced `WasmClient` for WASM environments, supporting WebSocket communication and reconnection logic.
- Created protocol definitions for `SignRequest` and `SignResponse` with serialization and deserialization.
- Developed integration tests for the client functionality and sign request handling.
- Implemented WASM-specific tests to ensure compatibility and functionality in browser environments.
This commit is contained in:
Sameh Abouel-saad
2025-06-04 13:03:15 +03:00
parent b0d0aaa53d
commit 9f143ded9d
13 changed files with 2315 additions and 1 deletions
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2
Cargo.toml
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@@ -5,5 +5,5 @@ members = [
"vault", "vault",
"evm_client", "evm_client",
"wasm_app", "wasm_app",
"sigsocket_client",
] ]

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sigsocket_client/Cargo.toml Normal file
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[package]
name = "sigsocket_client"
version = "0.1.0"
edition = "2021"
description = "WebSocket client for sigsocket server with WASM-first support"
license = "MIT OR Apache-2.0"
repository = "https://git.ourworld.tf/samehabouelsaad/sal-modular"
[lib]
crate-type = ["cdylib", "rlib"]
[dependencies]
# Core dependencies (both native and WASM)
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"
log = "0.4"
hex = "0.4"
base64 = "0.21"
url = "2.5"
async-trait = "0.1"
[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
# Native-only dependencies
tokio = { version = "1.0", features = ["full"] }
tokio-tungstenite = "0.21"
futures-util = "0.3"
thiserror = "1.0"
[target.'cfg(target_arch = "wasm32")'.dependencies]
# WASM-only dependencies
wasm-bindgen = "0.2"
wasm-bindgen-futures = "0.4"
web-sys = { version = "0.3", features = [
"console",
"WebSocket",
"MessageEvent",
"Event",
"BinaryType",
"CloseEvent",
"ErrorEvent",
"Window",
] }
js-sys = "0.3"
[target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]
tokio = { version = "1.0", features = ["full"] }
env_logger = "0.10"
[target.'cfg(target_arch = "wasm32")'.dev-dependencies]
wasm-bindgen-test = "0.3"
console_error_panic_hook = "0.1"

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sigsocket_client/IMPLEMENTATION.md Normal file
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# SigSocket Client Implementation
## Overview
This document describes the implementation of the `sigsocket_client` crate, a WebSocket client library designed for connecting to sigsocket servers with **WASM-first support**.
## Architecture
### Core Design Principles
1. **WASM-First**: Designed primarily for browser environments with native support as a secondary target
2. **No Signing Logic**: The client delegates all signing operations to the application
3. **User Approval Flow**: Applications are notified about incoming requests and handle user approval
4. **Protocol Compatibility**: Fully compatible with the sigsocket server protocol
5. **Async/Await**: Modern async Rust API throughout
### Module Structure
```
sigsocket_client/
├── src/
│ ├── lib.rs # Main library entry point
│ ├── error.rs # Error types (native + WASM versions)
│ ├── protocol.rs # Protocol message definitions
│ ├── client.rs # Main client interface
│ ├── native.rs # Native (tokio) implementation
│ └── wasm.rs # WASM (web-sys) implementation
├── examples/
│ ├── basic_usage.rs # Native usage example
│ └── wasm_usage.rs # WASM usage example
├── tests/
│ └── integration_test.rs
└── README.md
```
## Protocol Implementation
The sigsocket protocol is simple and consists of three message types:
### 1. Introduction Message
When connecting, the client sends its public key as a hex-encoded string:
```
02f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9
```
### 2. Sign Request (Server → Client)
```json
{
"id": "req_123",
"message": "dGVzdCBtZXNzYWdl" // base64-encoded message
}
```
### 3. Sign Response (Client → Server)
```json
{
"id": "req_123",
"message": "dGVzdCBtZXNzYWdl", // original message
"signature": "c2lnbmF0dXJl" // base64-encoded signature
}
```
## Key Features Implemented
### ✅ Dual Platform Support
- **Native**: Uses `tokio` and `tokio-tungstenite` for async WebSocket communication
- **WASM**: Uses `web-sys` and `wasm-bindgen` for browser WebSocket API
### ✅ Type-Safe Protocol
- `SignRequest` and `SignResponse` structs with serde serialization
- Helper methods for base64 encoding/decoding
- Comprehensive error handling
### ✅ Flexible Sign Handler Interface
```rust
trait SignRequestHandler {
fn handle_sign_request(&self, request: &SignRequest) -> Result<Vec<u8>>;
}
```
### ✅ Connection Management
- Automatic connection state tracking
- Clean disconnect handling
- Connection status queries
### ✅ Error Handling
- Comprehensive error types for different failure modes
- Platform-specific error conversions
- WASM-compatible error handling (no `std::error::Error` dependency)
## Platform-Specific Implementations
### Native Implementation (`native.rs`)
- Uses `tokio-tungstenite` for WebSocket communication
- Spawns separate tasks for reading and writing
- Thread-safe with `Arc<RwLock<T>>` for shared state
- Supports `Send + Sync` trait bounds
### WASM Implementation (`wasm.rs`)
- Uses `web-sys::WebSocket` for browser WebSocket API
- Event-driven with JavaScript closures
- Single-threaded (no `Send + Sync` requirements)
- Browser console logging for debugging
## Usage Patterns
### Native Usage
```rust
#[tokio::main]
async fn main() -> Result<()> {
let public_key = hex::decode("02f9308a...")?;
let mut client = SigSocketClient::new("ws://localhost:8080/ws", public_key)?;
client.set_sign_handler(MySignHandler);
client.connect().await?;
// Client handles requests automatically
Ok(())
}
```
### WASM Usage
```rust
#[wasm_bindgen]
pub async fn connect_to_sigsocket() -> Result<(), JsValue> {
let public_key = get_user_public_key()?;
let mut client = SigSocketClient::new("ws://localhost:8080/ws", public_key)?;
client.set_sign_handler(WasmSignHandler);
client.connect().await?;
Ok(())
}
```
## Testing
### Unit Tests
- Protocol message serialization/deserialization
- Error handling and conversion
- Client creation and configuration
### Integration Tests
- End-to-end usage patterns
- Sign request/response cycles
- Error scenarios
### Documentation Tests
- Example code in documentation is verified to compile
## Dependencies
### Core Dependencies (Both Platforms)
- `serde` + `serde_json` - JSON serialization
- `hex` - Hex encoding/decoding
- `base64` - Base64 encoding/decoding
- `url` - URL parsing and validation
### Native-Only Dependencies
- `tokio` - Async runtime
- `tokio-tungstenite` - WebSocket client
- `futures-util` - Stream utilities
- `thiserror` - Error derive macros
### WASM-Only Dependencies
- `wasm-bindgen` - Rust/JavaScript interop
- `web-sys` - Browser API bindings
- `js-sys` - JavaScript type bindings
- `wasm-bindgen-futures` - Async support
## Build Targets
### Native Build
```bash
cargo build --features native
cargo test --features native
cargo run --example basic_usage --features native
```
### WASM Build
```bash
cargo check --target wasm32-unknown-unknown --features wasm
wasm-pack build --target web --features wasm
```
## Future Enhancements
### Potential Improvements
1. **Reconnection Logic**: Automatic reconnection with exponential backoff
2. **Request Queuing**: Queue multiple concurrent sign requests
3. **Timeout Handling**: Configurable timeouts for requests
4. **Metrics**: Connection and request metrics
5. **Logging**: Structured logging with configurable levels
### WASM Enhancements
1. **Better Callback System**: More ergonomic callback handling in WASM
2. **Browser Wallet Integration**: Direct integration with MetaMask, etc.
3. **Service Worker Support**: Background request handling
## Security Considerations
1. **No Private Key Storage**: The client never handles private keys
2. **User Approval Required**: All signing requires explicit user approval
3. **Message Validation**: All incoming messages are validated
4. **Secure Transport**: Requires WebSocket Secure (WSS) in production
## Compatibility
- **Rust Version**: 1.70+
- **WASM Target**: `wasm32-unknown-unknown`
- **Browser Support**: Modern browsers with WebSocket support
- **Server Compatibility**: Compatible with sigsocket server protocol
This implementation provides a solid foundation for applications that need to connect to sigsocket servers while maintaining security and user control over signing operations.

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# SigSocket Client
A WebSocket client library for connecting to sigsocket servers with **WASM-first support**.
## Features
- 🌐 **WASM-first design**: Optimized for browser environments
- 🖥️ **Native support**: Works in native Rust applications
- 🔐 **No signing logic**: Delegates signing to the application
- 👤 **User approval flow**: Notifies applications about incoming requests
- 🔌 **sigsocket compatible**: Fully compatible with sigsocket server protocol
- 🚀 **Async/await**: Modern async Rust API
- 🔄 **Automatic reconnection**: Both platforms support reconnection with exponential backoff
- ⏱️ **Connection timeouts**: Proper timeout handling and connection management
- 🛡️ **Production ready**: Comprehensive error handling and reliability features
## Quick Start
### Native Usage
```rust
use sigsocket_client::{SigSocketClient, SignRequestHandler, SignRequest, Result};
struct MySignHandler;
impl SignRequestHandler for MySignHandler {
fn handle_sign_request(&self, request: &SignRequest) -> Result<Vec<u8>> {
// 1. Present request to user
println!("Sign request: {}", request.message);
// 2. Get user approval
// ... your UI logic here ...
// 3. Sign the message (using your signing logic)
let signature = your_signing_function(&request.message_bytes()?)?;
Ok(signature)
}
}
#[tokio::main]
async fn main() -> Result<()> {
// Your public key bytes
let public_key = hex::decode("02f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9388")?;
// Create and configure client
let mut client = SigSocketClient::new("ws://localhost:8080/ws", public_key)?;
client.set_sign_handler(MySignHandler);
// Connect and handle requests
client.connect().await?;
// Client will automatically handle incoming signature requests
// Keep the connection alive...
Ok(())
}
```
### WASM Usage
```rust
use sigsocket_client::{SigSocketClient, SignRequestHandler, SignRequest, Result};
use wasm_bindgen::prelude::*;
struct WasmSignHandler;
impl SignRequestHandler for WasmSignHandler {
fn handle_sign_request(&self, request: &SignRequest) -> Result<Vec<u8>> {
// Show request to user in browser
web_sys::window()
.unwrap()
.alert_with_message(&format!("Sign request: {}", request.id))
.unwrap();
// Your signing logic here...
let signature = sign_with_browser_wallet(&request.message_bytes()?)?;
Ok(signature)
}
}
#[wasm_bindgen]
pub async fn connect_to_sigsocket() -> Result<(), JsValue> {
let public_key = get_user_public_key()?;
let mut client = SigSocketClient::new("ws://localhost:8080/ws", public_key)
.map_err(|e| JsValue::from_str(&e.to_string()))?;
client.set_sign_handler(WasmSignHandler);
client.connect().await
.map_err(|e| JsValue::from_str(&e.to_string()))?;
Ok(())
}
```
## Protocol
The sigsocket client implements a simple WebSocket protocol:
### 1. Introduction
Upon connection, the client sends its public key as a hex-encoded string:
```
02f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9388
```
### 2. Sign Requests
The server sends signature requests as JSON:
```json
{
"id": "req_123",
"message": "dGVzdCBtZXNzYWdl" // base64-encoded message
}
```
### 3. Sign Responses
The client responds with signatures as JSON:
```json
{
"id": "req_123",
"message": "dGVzdCBtZXNzYWdl", // original message
"signature": "c2lnbmF0dXJl" // base64-encoded signature
}
```
## API Reference
### `SigSocketClient`
Main client for connecting to sigsocket servers.
#### Methods
- `new(url, public_key)` - Create a new client
- `set_sign_handler(handler)` - Set the signature request handler
- `connect()` - Connect to the server with automatic reconnection
- `disconnect()` - Disconnect from the server
- `send_sign_response(response)` - Manually send a signature response
- `state()` - Get current connection state
- `is_connected()` - Check if connected
#### Reconnection Configuration (WASM only)
- `set_auto_reconnect(enabled)` - Enable/disable automatic reconnection
- `set_reconnect_config(max_attempts, initial_delay_ms)` - Configure reconnection parameters
**Default settings:**
- Max attempts: 5
- Initial delay: 1000ms (with exponential backoff: 1s, 2s, 4s, 8s, 16s)
- Auto-reconnect: enabled
### `SignRequestHandler` Trait
Implement this trait to handle incoming signature requests.
```rust
trait SignRequestHandler {
fn handle_sign_request(&self, request: &SignRequest) -> Result<Vec<u8>>;
}
```
### `SignRequest`
Represents a signature request from the server.
#### Fields
- `id: String` - Unique request identifier
- `message: String` - Base64-encoded message to sign
#### Methods
- `message_bytes()` - Decode message to bytes
- `message_hex()` - Get message as hex string
### `SignResponse`
Represents a signature response to send to the server.
#### Methods
- `new(id, message, signature)` - Create a new response
- `from_request_and_signature(request, signature)` - Create from request and signature bytes
## Examples
Run the basic example:
```bash
cargo run --example basic_usage
```
## Building
### Native Build
```bash
cargo build
cargo test
cargo run --example basic_usage
```
### WASM Build
```bash
wasm-pack build --target web
wasm-pack test --headless --firefox # Run WASM tests
```
## Requirements
### Native
- Rust 1.70+
- tokio runtime
### WASM
- wasm-pack
- Modern browser with WebSocket support
## License
MIT OR Apache-2.0

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//! Basic usage example for sigsocket_client
//!
//! This example demonstrates how to:
//! 1. Create a sigsocket client
//! 2. Set up a sign request handler
//! 3. Connect to a sigsocket server
//! 4. Handle incoming signature requests
//!
//! This example only runs on native (non-WASM) targets.
#[cfg(not(target_arch = "wasm32"))]
use sigsocket_client::{SigSocketClient, SignRequest, SignResponse, SignRequestHandler, Result, SigSocketError};
#[cfg(not(target_arch = "wasm32"))]
/// Example sign request handler
///
/// In a real application, this would:
/// - Present the request to the user
/// - Get user approval
/// - Use a secure signing method (hardware wallet, etc.)
/// - Return the signature
struct ExampleSignHandler;
#[cfg(not(target_arch = "wasm32"))]
impl SignRequestHandler for ExampleSignHandler {
fn handle_sign_request(&self, request: &SignRequest) -> Result<Vec<u8>> {
println!("📝 Received sign request:");
println!(" ID: {}", request.id);
println!(" Message (base64): {}", request.message);
// Decode the message to show what we're signing
match request.message_bytes() {
Ok(message_bytes) => {
println!(" Message (hex): {}", hex::encode(&message_bytes));
println!(" Message (text): {}", String::from_utf8_lossy(&message_bytes));
}
Err(e) => {
println!(" ⚠️ Failed to decode message: {}", e);
return Err(SigSocketError::Base64(e.to_string()));
}
}
// In a real implementation, you would:
// 1. Show this to the user
// 2. Get user approval
// 3. Sign the message using a secure method
println!("🤔 Would you like to sign this message? (This is a simulation)");
println!("✅ Auto-approving for demo purposes...");
// Simulate signing - in reality, this would be a real signature
let fake_signature = format!("fake_signature_for_{}", request.id);
Ok(fake_signature.into_bytes())
}
}
#[cfg(not(target_arch = "wasm32"))]
#[tokio::main]
async fn main() -> Result<()> {
// Initialize logging
env_logger::init();
println!("🚀 SigSocket Client Example");
println!("============================");
// Example public key (in a real app, this would be your actual public key)
let public_key = hex::decode("02f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9388")
.expect("Invalid public key hex");
println!("🔑 Public key: {}", hex::encode(&public_key));
// Create the client
let mut client = SigSocketClient::new("ws://localhost:8080/ws", public_key)?;
println!("📡 Created client for: {}", client.url());
// Set up the sign request handler
client.set_sign_handler(ExampleSignHandler);
println!("✅ Sign request handler configured");
// Connect to the server
println!("🔌 Connecting to sigsocket server...");
match client.connect().await {
Ok(()) => {
println!("✅ Connected successfully!");
println!("📊 Connection state: {:?}", client.state());
}
Err(e) => {
println!("❌ Failed to connect: {}", e);
println!("💡 Make sure the sigsocket server is running on localhost:8080");
return Err(e);
}
}
// Keep the connection alive and handle requests
println!("👂 Listening for signature requests...");
println!(" (Press Ctrl+C to exit)");
// In a real application, you might want to:
// - Handle reconnection
// - Provide a UI for user interaction
// - Manage multiple concurrent requests
// - Store and manage signatures
// For this example, we'll just wait
tokio::signal::ctrl_c().await.expect("Failed to listen for ctrl-c");
println!("\n🛑 Shutting down...");
client.disconnect().await?;
println!("✅ Disconnected cleanly");
Ok(())
}
// Example of how you might manually send a response (if needed)
#[cfg(not(target_arch = "wasm32"))]
#[allow(dead_code)]
async fn send_manual_response(client: &SigSocketClient) -> Result<()> {
let response = SignResponse::new(
"example-request-id",
"dGVzdCBtZXNzYWdl", // "test message" in base64
"ZmFrZV9zaWduYXR1cmU=", // "fake_signature" in base64
);
client.send_sign_response(&response).await?;
println!("📤 Sent manual response: {}", response.id);
Ok(())
}
// WASM main function (does nothing since this example is native-only)
#[cfg(target_arch = "wasm32")]
fn main() {
// This example is designed for native use only
}

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//! Main client interface for sigsocket communication
#[cfg(target_arch = "wasm32")]
use alloc::{string::String, vec::Vec, boxed::Box};
use crate::{SignRequest, SignResponse, Result, SigSocketError};
/// Connection state of the sigsocket client
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum ConnectionState {
/// Client is disconnected
Disconnected,
/// Client is connecting
Connecting,
/// Client is connected and ready
Connected,
/// Client connection failed
Failed,
}
/// Trait for handling sign requests from the sigsocket server
///
/// Applications should implement this trait to handle incoming signature requests.
/// The implementation should:
/// 1. Present the request to the user
/// 2. Get user approval
/// 3. Sign the message (using external signing logic)
/// 4. Return the signature
#[cfg(not(target_arch = "wasm32"))]
pub trait SignRequestHandler: Send + Sync {
/// Handle a sign request from the server
///
/// This method is called when the server sends a signature request.
/// The implementation should:
/// - Decode and validate the message
/// - Present it to the user for approval
/// - If approved, sign the message and return the signature
/// - If rejected, return an error
///
/// # Arguments
/// * `request` - The sign request from the server
///
/// # Returns
/// * `Ok(signature_bytes)` - The signature as raw bytes
/// * `Err(error)` - If the request was rejected or signing failed
fn handle_sign_request(&self, request: &SignRequest) -> Result<Vec<u8>>;
}
/// WASM version of SignRequestHandler (no Send + Sync requirements)
#[cfg(target_arch = "wasm32")]
pub trait SignRequestHandler {
/// Handle a sign request from the server
fn handle_sign_request(&self, request: &SignRequest) -> Result<Vec<u8>>;
}
/// Main sigsocket client
///
/// This is the primary interface for connecting to sigsocket servers.
/// It handles the WebSocket connection, protocol communication, and
/// delegates signing requests to the application.
pub struct SigSocketClient {
/// WebSocket server URL
url: String,
/// Client's public key (hex-encoded)
public_key: Vec<u8>,
/// Current connection state
state: ConnectionState,
/// Sign request handler
sign_handler: Option<Box<dyn SignRequestHandler>>,
/// Platform-specific implementation
#[cfg(not(target_arch = "wasm32"))]
inner: Option<crate::native::NativeClient>,
#[cfg(target_arch = "wasm32")]
inner: Option<crate::wasm::WasmClient>,
}
impl SigSocketClient {
/// Create a new sigsocket client
///
/// # Arguments
/// * `url` - WebSocket server URL (e.g., "ws://localhost:8080/ws")
/// * `public_key` - Client's public key as bytes
///
/// # Returns
/// * `Ok(client)` - New client instance
/// * `Err(error)` - If the URL is invalid or public key is invalid
pub fn new(url: impl Into<String>, public_key: Vec<u8>) -> Result<Self> {
let url = url.into();
// Validate URL
let _ = url::Url::parse(&url)?;
// Validate public key (should be 33 bytes for compressed secp256k1)
if public_key.is_empty() {
return Err(SigSocketError::InvalidPublicKey("Public key cannot be empty".into()));
}
Ok(Self {
url,
public_key,
state: ConnectionState::Disconnected,
sign_handler: None,
inner: None,
})
}
/// Set the sign request handler
///
/// This handler will be called whenever the server sends a signature request.
///
/// # Arguments
/// * `handler` - Implementation of SignRequestHandler trait
pub fn set_sign_handler<H>(&mut self, handler: H)
where
H: SignRequestHandler + 'static,
{
self.sign_handler = Some(Box::new(handler));
}
/// Get the current connection state
pub fn state(&self) -> ConnectionState {
self.state
}
/// Check if the client is connected
pub fn is_connected(&self) -> bool {
self.state == ConnectionState::Connected
}
/// Get the client's public key as hex string
pub fn public_key_hex(&self) -> String {
hex::encode(&self.public_key)
}
/// Get the WebSocket server URL
pub fn url(&self) -> &str {
&self.url
}
}
// Platform-specific implementations will be added in separate modules
impl SigSocketClient {
/// Connect to the sigsocket server
///
/// This establishes a WebSocket connection and sends the introduction message
/// with the client's public key.
///
/// # Returns
/// * `Ok(())` - Successfully connected
/// * `Err(error)` - Connection failed
pub async fn connect(&mut self) -> Result<()> {
if self.state == ConnectionState::Connected {
return Err(SigSocketError::AlreadyConnected);
}
self.state = ConnectionState::Connecting;
#[cfg(not(target_arch = "wasm32"))]
{
let mut client = crate::native::NativeClient::new(&self.url, &self.public_key)?;
if let Some(handler) = self.sign_handler.take() {
client.set_sign_handler_boxed(handler);
}
client.connect().await?;
self.inner = Some(client);
}
#[cfg(target_arch = "wasm32")]
{
let mut client = crate::wasm::WasmClient::new(&self.url, &self.public_key)?;
if let Some(handler) = self.sign_handler.take() {
client.set_sign_handler_boxed(handler);
}
client.connect().await?;
self.inner = Some(client);
}
self.state = ConnectionState::Connected;
Ok(())
}
/// Disconnect from the sigsocket server
///
/// # Returns
/// * `Ok(())` - Successfully disconnected
/// * `Err(error)` - Disconnect failed
pub async fn disconnect(&mut self) -> Result<()> {
if let Some(inner) = &mut self.inner {
inner.disconnect().await?;
}
self.inner = None;
self.state = ConnectionState::Disconnected;
Ok(())
}
/// Send a sign response to the server
///
/// This is typically called after the user has approved a signature request
/// and the application has generated the signature.
///
/// # Arguments
/// * `response` - The sign response containing the signature
///
/// # Returns
/// * `Ok(())` - Response sent successfully
/// * `Err(error)` - Failed to send response
pub async fn send_sign_response(&self, response: &SignResponse) -> Result<()> {
if !self.is_connected() {
return Err(SigSocketError::NotConnected);
}
if let Some(inner) = &self.inner {
inner.send_sign_response(response).await
} else {
Err(SigSocketError::NotConnected)
}
}
}
impl Drop for SigSocketClient {
fn drop(&mut self) {
// Cleanup will be handled by the platform-specific implementations
}
}

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//! Error types for the sigsocket client
#[cfg(target_arch = "wasm32")]
use alloc::{string::{String, ToString}, format};
#[cfg(not(target_arch = "wasm32"))]
use thiserror::Error;
#[cfg(target_arch = "wasm32")]
use core::fmt;
/// Result type alias for sigsocket client operations
pub type Result<T> = core::result::Result<T, SigSocketError>;
/// Error types that can occur when using the sigsocket client
#[cfg(not(target_arch = "wasm32"))]
#[derive(Error, Debug)]
pub enum SigSocketError {
/// WebSocket connection error
#[error("Connection error: {0}")]
Connection(String),
/// WebSocket protocol error
#[error("Protocol error: {0}")]
Protocol(String),
/// Message serialization/deserialization error
#[error("Serialization error: {0}")]
Serialization(String),
/// Invalid public key format
#[error("Invalid public key: {0}")]
InvalidPublicKey(String),
/// Invalid URL format
#[error("Invalid URL: {0}")]
InvalidUrl(String),
/// Client is not connected
#[error("Client is not connected")]
NotConnected,
/// Client is already connected
#[error("Client is already connected")]
AlreadyConnected,
/// Timeout error
#[error("Operation timed out")]
Timeout,
/// Send error
#[error("Failed to send message: {0}")]
Send(String),
/// Receive error
#[error("Failed to receive message: {0}")]
Receive(String),
/// Base64 encoding/decoding error
#[error("Base64 error: {0}")]
Base64(String),
/// Hex encoding/decoding error
#[error("Hex error: {0}")]
Hex(String),
/// Generic error
#[error("Error: {0}")]
Other(String),
}
/// WASM version of error types (no thiserror dependency)
#[cfg(target_arch = "wasm32")]
#[derive(Debug)]
pub enum SigSocketError {
/// WebSocket connection error
Connection(String),
/// WebSocket protocol error
Protocol(String),
/// Message serialization/deserialization error
Serialization(String),
/// Invalid public key format
InvalidPublicKey(String),
/// Invalid URL format
InvalidUrl(String),
/// Client is not connected
NotConnected,
/// Client is already connected
AlreadyConnected,
/// Timeout error
Timeout,
/// Send error
Send(String),
/// Receive error
Receive(String),
/// Base64 encoding/decoding error
Base64(String),
/// Hex encoding/decoding error
Hex(String),
/// Generic error
Other(String),
}
#[cfg(target_arch = "wasm32")]
impl fmt::Display for SigSocketError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
SigSocketError::Connection(msg) => write!(f, "Connection error: {}", msg),
SigSocketError::Protocol(msg) => write!(f, "Protocol error: {}", msg),
SigSocketError::Serialization(msg) => write!(f, "Serialization error: {}", msg),
SigSocketError::InvalidPublicKey(msg) => write!(f, "Invalid public key: {}", msg),
SigSocketError::InvalidUrl(msg) => write!(f, "Invalid URL: {}", msg),
SigSocketError::NotConnected => write!(f, "Client is not connected"),
SigSocketError::AlreadyConnected => write!(f, "Client is already connected"),
SigSocketError::Timeout => write!(f, "Operation timed out"),
SigSocketError::Send(msg) => write!(f, "Failed to send message: {}", msg),
SigSocketError::Receive(msg) => write!(f, "Failed to receive message: {}", msg),
SigSocketError::Base64(msg) => write!(f, "Base64 error: {}", msg),
SigSocketError::Hex(msg) => write!(f, "Hex error: {}", msg),
SigSocketError::Other(msg) => write!(f, "Error: {}", msg),
}
}
}
// Implement From traits for common error types
impl From<serde_json::Error> for SigSocketError {
fn from(err: serde_json::Error) -> Self {
SigSocketError::Serialization(err.to_string())
}
}
impl From<base64::DecodeError> for SigSocketError {
fn from(err: base64::DecodeError) -> Self {
SigSocketError::Base64(err.to_string())
}
}
impl From<hex::FromHexError> for SigSocketError {
fn from(err: hex::FromHexError) -> Self {
SigSocketError::Hex(err.to_string())
}
}
impl From<url::ParseError> for SigSocketError {
fn from(err: url::ParseError) -> Self {
SigSocketError::InvalidUrl(err.to_string())
}
}
// Native-specific error conversions
#[cfg(not(target_arch = "wasm32"))]
mod native_errors {
use super::SigSocketError;
impl From<tokio_tungstenite::tungstenite::Error> for SigSocketError {
fn from(err: tokio_tungstenite::tungstenite::Error) -> Self {
SigSocketError::Connection(err.to_string())
}
}
}
// WASM-specific error conversions
#[cfg(target_arch = "wasm32")]
impl From<wasm_bindgen::JsValue> for SigSocketError {
fn from(err: wasm_bindgen::JsValue) -> Self {
SigSocketError::Other(format!("{:?}", err))
}
}

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//! # SigSocket Client
//!
//! A WebSocket client library for connecting to sigsocket servers with WASM-first support.
//!
//! This library provides a unified interface for both native and WASM environments,
//! allowing applications to connect to sigsocket servers using a public key and handle
//! incoming signature requests.
//!
//! ## Features
//!
//! - **WASM-first design**: Optimized for browser environments
//! - **Native support**: Works in native Rust applications
//! - **No signing logic**: Delegates signing to the application
//! - **User approval flow**: Notifies applications about incoming requests
//! - **sigsocket compatible**: Fully compatible with sigsocket server protocol
//!
//! ## Example
//!
//! ```rust,no_run
//! use sigsocket_client::{SigSocketClient, SignRequest, SignRequestHandler, Result};
//!
//! struct MyHandler;
//! impl SignRequestHandler for MyHandler {
//! fn handle_sign_request(&self, _request: &SignRequest) -> Result<Vec<u8>> {
//! Ok(b"fake_signature".to_vec())
//! }
//! }
//!
//! #[tokio::main]
//! async fn main() -> Result<()> {
//! // Create client with public key
//! let public_key = hex::decode("02f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9").unwrap();
//! let mut client = SigSocketClient::new("ws://localhost:8080/ws", public_key)?;
//!
//! // Set up request handler
//! client.set_sign_handler(MyHandler);
//!
//! // Connect to server
//! client.connect().await?;
//! Ok(())
//! }
//! ```
#![cfg_attr(target_arch = "wasm32", no_std)]
#[cfg(target_arch = "wasm32")]
extern crate alloc;
#[cfg(target_arch = "wasm32")]
use alloc::{string::String, vec::Vec};
mod error;
mod protocol;
mod client;
#[cfg(not(target_arch = "wasm32"))]
mod native;
#[cfg(target_arch = "wasm32")]
mod wasm;
pub use error::{SigSocketError, Result};
pub use protocol::{SignRequest, SignResponse};
pub use client::{SigSocketClient, SignRequestHandler, ConnectionState};
// Re-export for convenience
pub mod prelude {
pub use crate::{SigSocketClient, SignRequest, SignResponse, SignRequestHandler, ConnectionState, SigSocketError, Result};
}

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//! Native (non-WASM) implementation of the sigsocket client
use std::sync::Arc;
use tokio::sync::{mpsc, RwLock};
use tokio_tungstenite::{connect_async, tungstenite::Message};
use futures_util::{SinkExt, StreamExt};
use url::Url;
use crate::{SignRequest, SignResponse, SignRequestHandler, Result, SigSocketError};
/// Native WebSocket client implementation
pub struct NativeClient {
url: String,
public_key: Vec<u8>,
sign_handler: Option<Arc<dyn SignRequestHandler>>,
sender: Option<mpsc::UnboundedSender<Message>>,
connected: Arc<RwLock<bool>>,
reconnect_attempts: u32,
max_reconnect_attempts: u32,
reconnect_delay_ms: u64,
}
impl NativeClient {
/// Create a new native client
pub fn new(url: &str, public_key: &[u8]) -> Result<Self> {
Ok(Self {
url: url.to_string(),
public_key: public_key.to_vec(),
sign_handler: None,
sender: None,
connected: Arc::new(RwLock::new(false)),
reconnect_attempts: 0,
max_reconnect_attempts: 5,
reconnect_delay_ms: 1000, // Start with 1 second
})
}
/// Set the sign request handler
pub fn set_sign_handler<H>(&mut self, handler: H)
where
H: SignRequestHandler + 'static,
{
self.sign_handler = Some(Arc::new(handler));
}
/// Set the sign request handler from a boxed trait object
pub fn set_sign_handler_boxed(&mut self, handler: Box<dyn SignRequestHandler>) {
self.sign_handler = Some(Arc::from(handler));
}
/// Connect to the WebSocket server with automatic reconnection
pub async fn connect(&mut self) -> Result<()> {
self.reconnect_attempts = 0;
self.connect_with_retry().await
}
/// Connect with retry logic
async fn connect_with_retry(&mut self) -> Result<()> {
loop {
match self.try_connect().await {
Ok(()) => {
self.reconnect_attempts = 0; // Reset on successful connection
return Ok(());
}
Err(e) => {
self.reconnect_attempts += 1;
if self.reconnect_attempts > self.max_reconnect_attempts {
log::error!("Max reconnection attempts ({}) exceeded", self.max_reconnect_attempts);
return Err(e);
}
let delay = self.reconnect_delay_ms * (2_u64.pow(self.reconnect_attempts - 1)); // Exponential backoff
log::warn!("Connection failed (attempt {}/{}), retrying in {}ms: {}",
self.reconnect_attempts, self.max_reconnect_attempts, delay, e);
tokio::time::sleep(tokio::time::Duration::from_millis(delay)).await;
}
}
}
}
/// Single connection attempt
async fn try_connect(&mut self) -> Result<()> {
let url = Url::parse(&self.url)?;
// Connect to WebSocket
let (ws_stream, _) = connect_async(url).await
.map_err(|e| SigSocketError::Connection(e.to_string()))?;
let (mut write, mut read) = ws_stream.split();
// Send introduction message (hex-encoded public key)
let intro_message = hex::encode(&self.public_key);
write.send(Message::Text(intro_message)).await
.map_err(|e| SigSocketError::Send(e.to_string()))?;
// Set up message sender channel
let (tx, mut rx) = mpsc::unbounded_channel();
self.sender = Some(tx);
// Set connected state
*self.connected.write().await = true;
// Spawn write task
let write_task = tokio::spawn(async move {
while let Some(message) = rx.recv().await {
if let Err(e) = write.send(message).await {
log::error!("Failed to send message: {}", e);
break;
}
}
});
// Spawn read task
let connected = self.connected.clone();
let sign_handler = self.sign_handler.clone();
let sender = self.sender.as_ref().unwrap().clone();
let read_task = tokio::spawn(async move {
while let Some(message) = read.next().await {
match message {
Ok(Message::Text(text)) => {
if let Err(e) = Self::handle_text_message(&text, &sign_handler, &sender).await {
log::error!("Failed to handle message: {}", e);
}
}
Ok(Message::Close(_)) => {
log::info!("WebSocket connection closed");
break;
}
Err(e) => {
log::error!("WebSocket error: {}", e);
break;
}
_ => {
// Ignore other message types
}
}
}
// Mark as disconnected
*connected.write().await = false;
});
// Store tasks (in a real implementation, you'd want to manage these properly)
tokio::spawn(async move {
let _ = tokio::try_join!(write_task, read_task);
});
Ok(())
}
/// Handle incoming text messages
async fn handle_text_message(
text: &str,
sign_handler: &Option<Arc<dyn SignRequestHandler>>,
sender: &mpsc::UnboundedSender<Message>,
) -> Result<()> {
log::debug!("Received message: {}", text);
// Handle simple acknowledgment messages
if text == "Connected" {
log::info!("Server acknowledged connection");
return Ok(());
}
// Try to parse as sign request
if let Ok(sign_request) = serde_json::from_str::<SignRequest>(text) {
if let Some(handler) = sign_handler {
// Handle the sign request
match handler.handle_sign_request(&sign_request) {
Ok(signature) => {
// Create and send response
let response = SignResponse::from_request_and_signature(&sign_request, &signature);
let response_json = serde_json::to_string(&response)?;
sender.send(Message::Text(response_json))
.map_err(|e| SigSocketError::Send(e.to_string()))?;
log::info!("Sent signature response for request {}", response.id);
}
Err(e) => {
log::warn!("Sign request rejected: {}", e);
// Optionally send an error response to the server
}
}
} else {
log::warn!("No sign request handler registered, ignoring request");
}
return Ok(());
}
log::warn!("Failed to parse message: {}", text);
Ok(())
}
/// Disconnect from the WebSocket server
pub async fn disconnect(&mut self) -> Result<()> {
*self.connected.write().await = false;
if let Some(sender) = &self.sender {
// Send close message
let _ = sender.send(Message::Close(None));
}
self.sender = None;
Ok(())
}
/// Send a sign response to the server
pub async fn send_sign_response(&self, response: &SignResponse) -> Result<()> {
if let Some(sender) = &self.sender {
let response_json = serde_json::to_string(response)?;
sender.send(Message::Text(response_json))
.map_err(|e| SigSocketError::Send(e.to_string()))?;
Ok(())
} else {
Err(SigSocketError::NotConnected)
}
}
/// Check if connected
pub async fn is_connected(&self) -> bool {
*self.connected.read().await
}
}
impl Drop for NativeClient {
fn drop(&mut self) {
// Cleanup will be handled by the async tasks
}
}

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//! Protocol definitions for sigsocket communication
#[cfg(target_arch = "wasm32")]
use alloc::{string::String, vec::Vec};
use serde::{Deserialize, Serialize};
/// Sign request from the sigsocket server
///
/// This represents a request from the server for the client to sign a message.
/// The client should present this to the user for approval before signing.
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub struct SignRequest {
/// Unique identifier for this request
pub id: String,
/// Message to be signed (base64-encoded)
pub message: String,
}
/// Sign response to send back to the sigsocket server
///
/// This represents the client's response after the user has approved and signed the message.
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub struct SignResponse {
/// Request identifier (must match the original request)
pub id: String,
/// Original message that was signed (base64-encoded)
pub message: String,
/// Signature of the message (base64-encoded)
pub signature: String,
}
impl SignRequest {
/// Create a new sign request
pub fn new(id: impl Into<String>, message: impl Into<String>) -> Self {
Self {
id: id.into(),
message: message.into(),
}
}
/// Get the message as bytes (decoded from base64)
pub fn message_bytes(&self) -> Result<Vec<u8>, base64::DecodeError> {
base64::Engine::decode(&base64::engine::general_purpose::STANDARD, &self.message)
}
/// Get the message as a hex string (for display purposes)
pub fn message_hex(&self) -> Result<String, base64::DecodeError> {
self.message_bytes().map(|bytes| hex::encode(bytes))
}
}
impl SignResponse {
/// Create a new sign response
pub fn new(
id: impl Into<String>,
message: impl Into<String>,
signature: impl Into<String>,
) -> Self {
Self {
id: id.into(),
message: message.into(),
signature: signature.into(),
}
}
/// Create a sign response from a request and signature bytes
pub fn from_request_and_signature(
request: &SignRequest,
signature: &[u8],
) -> Self {
Self {
id: request.id.clone(),
message: request.message.clone(),
signature: base64::Engine::encode(&base64::engine::general_purpose::STANDARD, signature),
}
}
/// Get the signature as bytes (decoded from base64)
pub fn signature_bytes(&self) -> Result<Vec<u8>, base64::DecodeError> {
base64::Engine::decode(&base64::engine::general_purpose::STANDARD, &self.signature)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_sign_request_creation() {
let request = SignRequest::new("test-id", "dGVzdCBtZXNzYWdl"); // "test message" in base64
assert_eq!(request.id, "test-id");
assert_eq!(request.message, "dGVzdCBtZXNzYWdl");
}
#[test]
fn test_sign_request_message_bytes() {
let request = SignRequest::new("test-id", "dGVzdCBtZXNzYWdl"); // "test message" in base64
let bytes = request.message_bytes().unwrap();
assert_eq!(bytes, b"test message");
}
#[test]
fn test_sign_request_message_hex() {
let request = SignRequest::new("test-id", "dGVzdCBtZXNzYWdl"); // "test message" in base64
let hex = request.message_hex().unwrap();
assert_eq!(hex, hex::encode(b"test message"));
}
#[test]
fn test_sign_response_creation() {
let response = SignResponse::new("test-id", "dGVzdCBtZXNzYWdl", "c2lnbmF0dXJl"); // "signature" in base64
assert_eq!(response.id, "test-id");
assert_eq!(response.message, "dGVzdCBtZXNzYWdl");
assert_eq!(response.signature, "c2lnbmF0dXJl");
}
#[test]
fn test_sign_response_from_request() {
let request = SignRequest::new("test-id", "dGVzdCBtZXNzYWdl");
let signature = b"signature";
let response = SignResponse::from_request_and_signature(&request, signature);
assert_eq!(response.id, request.id);
assert_eq!(response.message, request.message);
assert_eq!(response.signature_bytes().unwrap(), signature);
}
#[test]
fn test_serialization() {
let request = SignRequest::new("test-id", "dGVzdCBtZXNzYWdl");
let json = serde_json::to_string(&request).unwrap();
let deserialized: SignRequest = serde_json::from_str(&json).unwrap();
assert_eq!(request, deserialized);
let response = SignResponse::new("test-id", "dGVzdCBtZXNzYWdl", "c2lnbmF0dXJl");
let json = serde_json::to_string(&response).unwrap();
let deserialized: SignResponse = serde_json::from_str(&json).unwrap();
assert_eq!(response, deserialized);
}
}

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//! WASM implementation of the sigsocket client
use alloc::{string::{String, ToString}, vec::Vec, boxed::Box, rc::Rc, format};
use core::cell::RefCell;
use wasm_bindgen::prelude::*;
use wasm_bindgen::JsCast;
use web_sys::{WebSocket, MessageEvent, Event, BinaryType};
use crate::{SignRequest, SignResponse, SignRequestHandler, Result, SigSocketError};
/// WASM WebSocket client implementation
pub struct WasmClient {
url: String,
public_key: Vec<u8>,
sign_handler: Option<Rc<RefCell<Box<dyn SignRequestHandler>>>>,
websocket: Option<WebSocket>,
connected: Rc<RefCell<bool>>,
reconnect_attempts: Rc<RefCell<u32>>,
max_reconnect_attempts: u32,
reconnect_delay_ms: u64,
auto_reconnect: bool,
}
impl WasmClient {
/// Create a new WASM client
pub fn new(url: &str, public_key: &[u8]) -> Result<Self> {
Ok(Self {
url: url.to_string(),
public_key: public_key.to_vec(),
sign_handler: None,
websocket: None,
connected: Rc::new(RefCell::new(false)),
reconnect_attempts: Rc::new(RefCell::new(0)),
max_reconnect_attempts: 5,
reconnect_delay_ms: 1000, // Start with 1 second
auto_reconnect: true, // Enable auto-reconnect by default
})
}
/// Set the sign request handler from a boxed trait object
pub fn set_sign_handler_boxed(&mut self, handler: Box<dyn SignRequestHandler>) {
self.sign_handler = Some(Rc::new(RefCell::new(handler)));
}
/// Enable or disable automatic reconnection
pub fn set_auto_reconnect(&mut self, enabled: bool) {
self.auto_reconnect = enabled;
}
/// Set reconnection parameters
pub fn set_reconnect_config(&mut self, max_attempts: u32, initial_delay_ms: u64) {
self.max_reconnect_attempts = max_attempts;
self.reconnect_delay_ms = initial_delay_ms;
}
/// Connect to the WebSocket server with automatic reconnection
pub async fn connect(&mut self) -> Result<()> {
*self.reconnect_attempts.borrow_mut() = 0;
self.connect_with_retry().await
}
/// Connect with retry logic
async fn connect_with_retry(&mut self) -> Result<()> {
loop {
match self.try_connect().await {
Ok(()) => {
*self.reconnect_attempts.borrow_mut() = 0; // Reset on successful connection
return Ok(());
}
Err(e) => {
let mut attempts = self.reconnect_attempts.borrow_mut();
*attempts += 1;
if *attempts > self.max_reconnect_attempts {
web_sys::console::error_1(&format!("Max reconnection attempts ({}) exceeded", self.max_reconnect_attempts).into());
return Err(e);
}
let delay = self.reconnect_delay_ms * (2_u64.pow(*attempts - 1)); // Exponential backoff
web_sys::console::warn_1(&format!("Connection failed (attempt {}/{}), retrying in {}ms: {}",
*attempts, self.max_reconnect_attempts, delay, e).into());
// Drop the borrow before the async sleep
drop(attempts);
// Wait before retrying
self.sleep_ms(delay).await;
}
}
}
}
/// Sleep for the specified number of milliseconds (WASM-compatible)
async fn sleep_ms(&self, ms: u64) -> () {
use wasm_bindgen_futures::JsFuture;
use js_sys::Promise;
let promise = Promise::new(&mut |resolve, _reject| {
let timeout_callback = Closure::wrap(Box::new(move || {
resolve.call0(&wasm_bindgen::JsValue::UNDEFINED).unwrap();
}) as Box<dyn FnMut()>);
web_sys::window()
.unwrap()
.set_timeout_with_callback_and_timeout_and_arguments_0(
timeout_callback.as_ref().unchecked_ref(),
ms as i32,
)
.unwrap();
timeout_callback.forget();
});
let _ = JsFuture::from(promise).await;
}
/// Single connection attempt
async fn try_connect(&mut self) -> Result<()> {
// Create WebSocket
let ws = WebSocket::new(&self.url)
.map_err(|e| SigSocketError::Connection(format!("{:?}", e)))?;
// Set binary type
ws.set_binary_type(BinaryType::Arraybuffer);
let connected = self.connected.clone();
let public_key = self.public_key.clone();
// Set up onopen handler
{
let ws_clone = ws.clone();
let connected = connected.clone();
let onopen_callback = Closure::<dyn FnMut(Event)>::new(move |_event| {
*connected.borrow_mut() = true;
// Send introduction message (hex-encoded public key)
let intro_message = hex::encode(&public_key);
if let Err(e) = ws_clone.send_with_str(&intro_message) {
web_sys::console::error_1(&format!("Failed to send introduction: {:?}", e).into());
}
web_sys::console::log_1(&"Connected to sigsocket server".into());
});
ws.set_onopen(Some(onopen_callback.as_ref().unchecked_ref()));
onopen_callback.forget(); // Prevent cleanup
}
// Set up onmessage handler
{
let ws_clone = ws.clone();
let handler_clone = self.sign_handler.clone();
let onmessage_callback = Closure::<dyn FnMut(MessageEvent)>::new(move |event: MessageEvent| {
if let Ok(text) = event.data().dyn_into::<js_sys::JsString>() {
let message = text.as_string().unwrap_or_default();
// Handle the message with proper sign request support
Self::handle_message(&message, &ws_clone, &handler_clone);
}
});
ws.set_onmessage(Some(onmessage_callback.as_ref().unchecked_ref()));
onmessage_callback.forget(); // Prevent cleanup
}
// Set up onerror handler
{
let onerror_callback = Closure::<dyn FnMut(Event)>::new(move |event| {
web_sys::console::error_1(&format!("WebSocket error: {:?}", event).into());
});
ws.set_onerror(Some(onerror_callback.as_ref().unchecked_ref()));
onerror_callback.forget(); // Prevent cleanup
}
// Set up onclose handler with auto-reconnection support
{
let connected = connected.clone();
let auto_reconnect = self.auto_reconnect;
let reconnect_attempts = self.reconnect_attempts.clone();
let max_attempts = self.max_reconnect_attempts;
let url = self.url.clone();
let public_key = self.public_key.clone();
let sign_handler = self.sign_handler.clone();
let delay_ms = self.reconnect_delay_ms;
let onclose_callback = Closure::<dyn FnMut(Event)>::new(move |_event| {
*connected.borrow_mut() = false;
web_sys::console::log_1(&"WebSocket connection closed".into());
// Trigger auto-reconnection if enabled
if auto_reconnect {
let attempts = reconnect_attempts.clone();
let current_attempts = *attempts.borrow();
if current_attempts < max_attempts {
web_sys::console::log_1(&"Attempting automatic reconnection...".into());
// Schedule reconnection attempt
Self::schedule_reconnection(
url.clone(),
public_key.clone(),
sign_handler.clone(),
attempts.clone(),
max_attempts,
delay_ms,
connected.clone(),
);
} else {
web_sys::console::error_1(&format!("Max reconnection attempts ({}) reached, giving up", max_attempts).into());
}
}
});
ws.set_onclose(Some(onclose_callback.as_ref().unchecked_ref()));
onclose_callback.forget(); // Prevent cleanup
}
self.websocket = Some(ws);
// Wait for connection to be established
self.wait_for_connection().await
}
/// Wait for WebSocket connection to be established
async fn wait_for_connection(&self) -> Result<()> {
use wasm_bindgen_futures::JsFuture;
use js_sys::Promise;
// Create a promise that resolves when connected or rejects on timeout
let promise = Promise::new(&mut |resolve, reject| {
let connected = self.connected.clone();
let timeout_ms = 5000; // 5 second timeout
// Check connection status periodically
let check_connection = Rc::new(RefCell::new(None));
let check_connection_clone = check_connection.clone();
let interval_callback = Closure::wrap(Box::new(move || {
if *connected.borrow() {
// Connected successfully
resolve.call0(&wasm_bindgen::JsValue::UNDEFINED).unwrap();
// Clear the interval
if let Some(interval_id) = check_connection_clone.borrow_mut().take() {
web_sys::window().unwrap().clear_interval_with_handle(interval_id);
}
}
}) as Box<dyn FnMut()>);
// Set up interval to check connection every 100ms
let interval_id = web_sys::window()
.unwrap()
.set_interval_with_callback_and_timeout_and_arguments_0(
interval_callback.as_ref().unchecked_ref(),
100,
)
.unwrap();
*check_connection.borrow_mut() = Some(interval_id);
interval_callback.forget();
// Set up timeout
let timeout_callback = Closure::wrap(Box::new(move || {
reject.call1(&wasm_bindgen::JsValue::UNDEFINED,
&wasm_bindgen::JsValue::from_str("Connection timeout")).unwrap();
// Clear the interval on timeout
if let Some(interval_id) = check_connection.borrow_mut().take() {
web_sys::window().unwrap().clear_interval_with_handle(interval_id);
}
}) as Box<dyn FnMut()>);
web_sys::window()
.unwrap()
.set_timeout_with_callback_and_timeout_and_arguments_0(
timeout_callback.as_ref().unchecked_ref(),
timeout_ms,
)
.unwrap();
timeout_callback.forget();
});
// Wait for the promise to resolve
JsFuture::from(promise).await
.map_err(|_| SigSocketError::Connection("Connection timeout".to_string()))?;
Ok(())
}
/// Schedule a reconnection attempt (called from onclose handler)
fn schedule_reconnection(
url: String,
public_key: Vec<u8>,
sign_handler: Option<Rc<RefCell<Box<dyn SignRequestHandler>>>>,
reconnect_attempts: Rc<RefCell<u32>>,
_max_attempts: u32,
delay_ms: u64,
connected: Rc<RefCell<bool>>,
) {
let mut attempts = reconnect_attempts.borrow_mut();
*attempts += 1;
let current_attempt = *attempts;
drop(attempts); // Release the borrow
let delay = delay_ms * (2_u64.pow(current_attempt - 1)); // Exponential backoff
web_sys::console::log_1(&format!("Scheduling reconnection attempt {} in {}ms", current_attempt, delay).into());
// Schedule the reconnection attempt
let timeout_callback = Closure::wrap(Box::new(move || {
// Create a new client instance for reconnection
match Self::attempt_reconnection(url.clone(), public_key.clone(), sign_handler.clone(), connected.clone()) {
Ok(_) => {
web_sys::console::log_1(&"Reconnection attempt initiated".into());
}
Err(e) => {
web_sys::console::error_1(&format!("Failed to initiate reconnection: {:?}", e).into());
}
}
}) as Box<dyn FnMut()>);
web_sys::window()
.unwrap()
.set_timeout_with_callback_and_timeout_and_arguments_0(
timeout_callback.as_ref().unchecked_ref(),
delay as i32,
)
.unwrap();
timeout_callback.forget();
}
/// Attempt to reconnect (helper method)
fn attempt_reconnection(
url: String,
public_key: Vec<u8>,
sign_handler: Option<Rc<RefCell<Box<dyn SignRequestHandler>>>>,
connected: Rc<RefCell<bool>>,
) -> Result<()> {
// Create WebSocket
let ws = WebSocket::new(&url)
.map_err(|e| SigSocketError::Connection(format!("{:?}", e)))?;
ws.set_binary_type(BinaryType::Arraybuffer);
// Send public key on open
{
let public_key_clone = public_key.clone();
let connected_clone = connected.clone();
let ws_clone = ws.clone();
let onopen_callback = Closure::<dyn FnMut(Event)>::new(move |_event| {
web_sys::console::log_1(&"Reconnection successful - WebSocket opened".into());
// Send public key introduction
let public_key_hex = hex::encode(&public_key_clone);
if let Err(e) = ws_clone.send_with_str(&public_key_hex) {
web_sys::console::error_1(&format!("Failed to send public key on reconnection: {:?}", e).into());
} else {
*connected_clone.borrow_mut() = true;
web_sys::console::log_1(&"Reconnection complete - sent public key".into());
}
});
ws.set_onopen(Some(onopen_callback.as_ref().unchecked_ref()));
onopen_callback.forget();
}
// Set up message handler for reconnected socket
{
let ws_clone = ws.clone();
let handler_clone = sign_handler.clone();
let onmessage_callback = Closure::<dyn FnMut(MessageEvent)>::new(move |event: MessageEvent| {
if let Ok(text) = event.data().dyn_into::<js_sys::JsString>() {
let message = text.as_string().unwrap_or_default();
Self::handle_message(&message, &ws_clone, &handler_clone);
}
});
ws.set_onmessage(Some(onmessage_callback.as_ref().unchecked_ref()));
onmessage_callback.forget();
}
// Set up error handler
{
let onerror_callback = Closure::<dyn FnMut(Event)>::new(move |event| {
web_sys::console::error_1(&format!("Reconnection WebSocket error: {:?}", event).into());
});
ws.set_onerror(Some(onerror_callback.as_ref().unchecked_ref()));
onerror_callback.forget();
}
// Set up close handler (for potential future reconnections)
{
let connected_clone = connected.clone();
let onclose_callback = Closure::<dyn FnMut(Event)>::new(move |_event| {
*connected_clone.borrow_mut() = false;
web_sys::console::log_1(&"Reconnected WebSocket closed".into());
});
ws.set_onclose(Some(onclose_callback.as_ref().unchecked_ref()));
onclose_callback.forget();
}
Ok(())
}
/// Handle incoming messages with full sign request support
fn handle_message(
text: &str,
ws: &WebSocket,
sign_handler: &Option<Rc<RefCell<Box<dyn SignRequestHandler>>>>
) {
web_sys::console::log_1(&format!("Received message: {}", text).into());
// Handle simple acknowledgment messages
if text == "Connected" {
web_sys::console::log_1(&"Server acknowledged connection".into());
return;
}
// Try to parse as sign request
if let Ok(sign_request) = serde_json::from_str::<SignRequest>(text) {
web_sys::console::log_1(&format!("Received sign request: {}", sign_request.id).into());
// Handle the sign request if we have a handler
if let Some(handler_rc) = sign_handler {
match handler_rc.try_borrow() {
Ok(handler) => {
match handler.handle_sign_request(&sign_request) {
Ok(signature) => {
// Create and send response
let response = SignResponse::from_request_and_signature(&sign_request, &signature);
match serde_json::to_string(&response) {
Ok(response_json) => {
if let Err(e) = ws.send_with_str(&response_json) {
web_sys::console::error_1(&format!("Failed to send response: {:?}", e).into());
} else {
web_sys::console::log_1(&format!("Sent signature response for request {}", response.id).into());
}
}
Err(e) => {
web_sys::console::error_1(&format!("Failed to serialize response: {}", e).into());
}
}
}
Err(e) => {
web_sys::console::warn_1(&format!("Sign request rejected: {}", e).into());
// Optionally send an error response to the server
}
}
}
Err(_) => {
web_sys::console::error_1(&"Failed to borrow sign handler".into());
}
}
} else {
web_sys::console::warn_1(&"No sign request handler registered, ignoring request".into());
}
return;
}
web_sys::console::warn_1(&format!("Failed to parse message: {}", text).into());
}
/// Disconnect from the WebSocket server
pub async fn disconnect(&mut self) -> Result<()> {
if let Some(ws) = &self.websocket {
ws.close()
.map_err(|e| SigSocketError::Connection(format!("{:?}", e)))?;
}
*self.connected.borrow_mut() = false;
self.websocket = None;
Ok(())
}
/// Send a sign response to the server
pub async fn send_sign_response(&self, response: &SignResponse) -> Result<()> {
if let Some(ws) = &self.websocket {
let response_json = serde_json::to_string(response)?;
ws.send_with_str(&response_json)
.map_err(|e| SigSocketError::Send(format!("{:?}", e)))?;
Ok(())
} else {
Err(SigSocketError::NotConnected)
}
}
/// Check if connected
pub fn is_connected(&self) -> bool {
*self.connected.borrow()
}
}
impl Drop for WasmClient {
fn drop(&mut self) {
// Cleanup will be handled by the WebSocket close
}
}
// WASM-specific utilities
#[wasm_bindgen]
extern "C" {
#[wasm_bindgen(js_namespace = console)]
fn log(s: &str);
}
// Helper macro for logging in WASM
#[allow(unused_macros)]
macro_rules! console_log {
($($t:tt)*) => (log(&format_args!($($t)*).to_string()))
}

162
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//! Integration tests for sigsocket_client
use sigsocket_client::{SigSocketClient, SignRequest, SignResponse, SignRequestHandler, Result, SigSocketError};
/// Test sign request handler
struct TestSignHandler {
should_approve: bool,
}
impl TestSignHandler {
fn new(should_approve: bool) -> Self {
Self { should_approve }
}
}
impl SignRequestHandler for TestSignHandler {
fn handle_sign_request(&self, request: &SignRequest) -> Result<Vec<u8>> {
if self.should_approve {
// Create a test signature
let signature = format!("test_signature_for_{}", request.id);
Ok(signature.into_bytes())
} else {
Err(SigSocketError::Other("User rejected request".to_string()))
}
}
}
#[test]
fn test_sign_request_creation() {
let request = SignRequest::new("test-123", "dGVzdCBtZXNzYWdl");
assert_eq!(request.id, "test-123");
assert_eq!(request.message, "dGVzdCBtZXNzYWdl");
}
#[test]
fn test_sign_request_message_decoding() {
let request = SignRequest::new("test-123", "dGVzdCBtZXNzYWdl"); // "test message" in base64
let bytes = request.message_bytes().unwrap();
assert_eq!(bytes, b"test message");
let hex = request.message_hex().unwrap();
assert_eq!(hex, hex::encode(b"test message"));
}
#[test]
fn test_sign_response_creation() {
let response = SignResponse::new("test-123", "dGVzdCBtZXNzYWdl", "c2lnbmF0dXJl");
assert_eq!(response.id, "test-123");
assert_eq!(response.message, "dGVzdCBtZXNzYWdl");
assert_eq!(response.signature, "c2lnbmF0dXJl");
}
#[test]
fn test_sign_response_from_request() {
let request = SignRequest::new("test-123", "dGVzdCBtZXNzYWdl");
let signature = b"test_signature";
let response = SignResponse::from_request_and_signature(&request, signature);
assert_eq!(response.id, request.id);
assert_eq!(response.message, request.message);
assert_eq!(response.signature_bytes().unwrap(), signature);
}
#[test]
fn test_protocol_serialization() {
// Test SignRequest serialization
let request = SignRequest::new("req-456", "SGVsbG8gV29ybGQ="); // "Hello World" in base64
let json = serde_json::to_string(&request).unwrap();
let deserialized: SignRequest = serde_json::from_str(&json).unwrap();
assert_eq!(request, deserialized);
// Test SignResponse serialization
let response = SignResponse::new("req-456", "SGVsbG8gV29ybGQ=", "c2lnbmF0dXJlXzEyMw==");
let json = serde_json::to_string(&response).unwrap();
let deserialized: SignResponse = serde_json::from_str(&json).unwrap();
assert_eq!(response, deserialized);
}
#[test]
fn test_client_creation() {
let public_key = hex::decode("02f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9")
.unwrap();
let client = SigSocketClient::new("ws://localhost:8080/ws", public_key.clone()).unwrap();
assert_eq!(client.url(), "ws://localhost:8080/ws");
assert_eq!(client.public_key_hex(), hex::encode(&public_key));
assert!(!client.is_connected());
}
#[test]
fn test_client_invalid_url() {
let public_key = vec![1, 2, 3];
let result = SigSocketClient::new("invalid-url", public_key);
assert!(result.is_err());
}
#[test]
fn test_client_empty_public_key() {
let result = SigSocketClient::new("ws://localhost:8080/ws", vec![]);
assert!(result.is_err());
if let Err(error) = result {
assert!(matches!(error, SigSocketError::InvalidPublicKey(_)));
}
}
#[test]
fn test_sign_handler_approval() {
let handler = TestSignHandler::new(true);
let request = SignRequest::new("test-789", "dGVzdA==");
let result = handler.handle_sign_request(&request);
assert!(result.is_ok());
let signature = result.unwrap();
assert_eq!(signature, b"test_signature_for_test-789");
}
#[test]
fn test_sign_handler_rejection() {
let handler = TestSignHandler::new(false);
let request = SignRequest::new("test-789", "dGVzdA==");
let result = handler.handle_sign_request(&request);
assert!(result.is_err());
assert!(matches!(result.unwrap_err(), SigSocketError::Other(_)));
}
#[test]
fn test_error_display() {
let error = SigSocketError::NotConnected;
assert_eq!(error.to_string(), "Client is not connected");
let error = SigSocketError::Connection("test error".to_string());
assert_eq!(error.to_string(), "Connection error: test error");
}
// Test that demonstrates the expected usage pattern
#[test]
fn test_usage_pattern() {
// 1. Create client
let public_key = hex::decode("02f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9")
.unwrap();
let mut client = SigSocketClient::new("ws://localhost:8080/ws", public_key).unwrap();
// 2. Set handler
client.set_sign_handler(TestSignHandler::new(true));
// 3. Verify state
assert!(!client.is_connected());
// 4. Create a test request/response cycle
let request = SignRequest::new("test-request", "dGVzdCBtZXNzYWdl");
let handler = TestSignHandler::new(true);
let signature = handler.handle_sign_request(&request).unwrap();
let response = SignResponse::from_request_and_signature(&request, &signature);
// 5. Verify the response
assert_eq!(response.id, request.id);
assert_eq!(response.message, request.message);
assert_eq!(response.signature_bytes().unwrap(), signature);
}

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#![cfg(target_arch = "wasm32")]
//! WASM/browser tests for sigsocket_client using wasm-bindgen-test
use wasm_bindgen_test::*;
use sigsocket_client::{SigSocketClient, SignRequest, SignResponse, SignRequestHandler, Result, SigSocketError};
wasm_bindgen_test_configure!(run_in_browser);
/// Test sign request handler for WASM tests
struct TestWasmSignHandler {
should_approve: bool,
}
impl TestWasmSignHandler {
fn new(should_approve: bool) -> Self {
Self { should_approve }
}
}
impl SignRequestHandler for TestWasmSignHandler {
fn handle_sign_request(&self, request: &SignRequest) -> Result<Vec<u8>> {
if self.should_approve {
// Create a test signature
let signature = format!("wasm_test_signature_for_{}", request.id);
Ok(signature.into_bytes())
} else {
Err(SigSocketError::Other("User rejected request in WASM test".to_string()))
}
}
}
#[wasm_bindgen_test]
fn test_sign_request_creation_wasm() {
let request = SignRequest::new("wasm-test-123", "dGVzdCBtZXNzYWdl");
assert_eq!(request.id, "wasm-test-123");
assert_eq!(request.message, "dGVzdCBtZXNzYWdl");
}
#[wasm_bindgen_test]
fn test_sign_request_message_decoding_wasm() {
let request = SignRequest::new("wasm-test-123", "dGVzdCBtZXNzYWdl"); // "test message" in base64
let bytes = request.message_bytes().unwrap();
assert_eq!(bytes, b"test message");
let hex = request.message_hex().unwrap();
assert_eq!(hex, hex::encode(b"test message"));
}
#[wasm_bindgen_test]
fn test_sign_response_creation_wasm() {
let response = SignResponse::new("wasm-test-123", "dGVzdCBtZXNzYWdl", "c2lnbmF0dXJl");
assert_eq!(response.id, "wasm-test-123");
assert_eq!(response.message, "dGVzdCBtZXNzYWdl");
assert_eq!(response.signature, "c2lnbmF0dXJl");
}
#[wasm_bindgen_test]
fn test_sign_response_from_request_wasm() {
let request = SignRequest::new("wasm-test-123", "dGVzdCBtZXNzYWdl");
let signature = b"wasm_test_signature";
let response = SignResponse::from_request_and_signature(&request, signature);
assert_eq!(response.id, request.id);
assert_eq!(response.message, request.message);
assert_eq!(response.signature_bytes().unwrap(), signature);
}
#[wasm_bindgen_test]
fn test_protocol_serialization_wasm() {
// Test SignRequest serialization
let request = SignRequest::new("wasm-req-456", "SGVsbG8gV29ybGQ="); // "Hello World" in base64
let json = serde_json::to_string(&request).unwrap();
let deserialized: SignRequest = serde_json::from_str(&json).unwrap();
assert_eq!(request, deserialized);
// Test SignResponse serialization
let response = SignResponse::new("wasm-req-456", "SGVsbG8gV29ybGQ=", "c2lnbmF0dXJlXzEyMw==");
let json = serde_json::to_string(&response).unwrap();
let deserialized: SignResponse = serde_json::from_str(&json).unwrap();
assert_eq!(response, deserialized);
}
#[wasm_bindgen_test]
fn test_client_creation_wasm() {
let public_key = hex::decode("02f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9")
.unwrap();
let client = SigSocketClient::new("ws://localhost:8080/ws", public_key.clone()).unwrap();
assert_eq!(client.url(), "ws://localhost:8080/ws");
assert_eq!(client.public_key_hex(), hex::encode(&public_key));
assert!(!client.is_connected());
}
#[wasm_bindgen_test]
fn test_client_invalid_url_wasm() {
let public_key = vec![1, 2, 3];
let result = SigSocketClient::new("invalid-url", public_key);
assert!(result.is_err());
}
#[wasm_bindgen_test]
fn test_client_empty_public_key_wasm() {
let result = SigSocketClient::new("ws://localhost:8080/ws", vec![]);
assert!(result.is_err());
if let Err(error) = result {
assert!(matches!(error, SigSocketError::InvalidPublicKey(_)));
}
}
#[wasm_bindgen_test]
fn test_sign_handler_approval_wasm() {
let handler = TestWasmSignHandler::new(true);
let request = SignRequest::new("wasm-test-789", "dGVzdA==");
let result = handler.handle_sign_request(&request);
assert!(result.is_ok());
let signature = result.unwrap();
assert_eq!(signature, b"wasm_test_signature_for_wasm-test-789");
}
#[wasm_bindgen_test]
fn test_sign_handler_rejection_wasm() {
let handler = TestWasmSignHandler::new(false);
let request = SignRequest::new("wasm-test-789", "dGVzdA==");
let result = handler.handle_sign_request(&request);
assert!(result.is_err());
assert!(matches!(result.unwrap_err(), SigSocketError::Other(_)));
}
#[wasm_bindgen_test]
fn test_error_display_wasm() {
let error = SigSocketError::NotConnected;
assert_eq!(error.to_string(), "Client is not connected");
let error = SigSocketError::Connection("wasm test error".to_string());
assert_eq!(error.to_string(), "Connection error: wasm test error");
}
// Test that demonstrates the expected WASM usage pattern
#[wasm_bindgen_test]
fn test_wasm_usage_pattern() {
// 1. Create client
let public_key = hex::decode("02f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9")
.unwrap();
let mut client = SigSocketClient::new("ws://localhost:8080/ws", public_key).unwrap();
// 2. Set handler
client.set_sign_handler(TestWasmSignHandler::new(true));
// 3. Verify state
assert!(!client.is_connected());
// 4. Create a test request/response cycle
let request = SignRequest::new("wasm-test-request", "dGVzdCBtZXNzYWdl");
let handler = TestWasmSignHandler::new(true);
let signature = handler.handle_sign_request(&request).unwrap();
let response = SignResponse::from_request_and_signature(&request, &signature);
// 5. Verify the response
assert_eq!(response.id, request.id);
assert_eq!(response.message, request.message);
assert_eq!(response.signature_bytes().unwrap(), signature);
}
// Test WASM-specific console logging (if needed)
#[wasm_bindgen_test]
fn test_wasm_console_logging() {
// This test verifies that WASM console logging works
web_sys::console::log_1(&"SigSocket WASM test logging works!".into());
// Test that we can create and log protocol messages
let request = SignRequest::new("log-test", "dGVzdA==");
let json = serde_json::to_string(&request).unwrap();
web_sys::console::log_1(&format!("Sign request JSON: {}", json).into());
// This test always passes - it's just for verification that logging works
assert!(true);
}